Sewing machines



July 17, 1956 F. B. HOLMES-HIGGIN 2,754,730

SEWING MACHINES l9 Sheets-Sheet 1 Filed Nov. 28, 1952 AH/orwey July 17,1956 F. B. HOLMES-HIGGIN 2,754,780

SEWING MACHINES Filed Nov. 28, 1952 19 Sheets-Sheet 2 Af/arne/ July 17,1956 F. B. HOLMES-HIGGIN 2,754,780

SEWING MACHINES Filed Nov. 28, 1952 19 Sheets-Sheet 3 13o 13s 13s 419July 17, 1956 F. B. HOLMES-HIGGIN 2,754,780

SEWING MACHINES Filed Nov. 28, 1952 19 Sheets-Sheet 4 A bczzex July 17,1956 F. B. HOLMES-HIGGIN 2,754,780

SEWING MACHINES l9 Sheets-Sheet 5 Filed Nov. 28, 1952 July 17, 1956 F.B. HOLMES-HIGGIN 2,754,78

SEWING MACHINES Filed Nov. 28, 1952 19 Sheets-Sheet 6 July 17, 1956 F.B. HOLMES-HIGGIN 2,754,780

SEWING MACHINES Filed Nov. 28, 1952 19 Sheets-Sheet '7 y 1956 F. B.HOLMES-HIGGIN 2,754,780

SEWING MACHINES 19 Sheets-Sheet 8 Filed Nov. 28, 1952 July 17, 1956 F.B. HOLMES-HIGGIN 2,754,780

SEWING MACHINES Filed Nov. 28, 1952 19 SheetsSheet 9IIIIIIIIIIIIIHIHIITK July 17, 1956 F. B. HOLMES-HIGGIN d SEWING MACHINESFiled NOV. 28, 1952 19 Sheets-Sheet l0 V M \g f f K k 2 1 3 I m A 2 L1ix y 1956 F. B. HOLMES-HIGGIN 2,754,780

SEWING MACHINES Filed Nov. 28, 1952 19 Sheets-Sheet 11 I87 I85 as I84I86 FIG/5.

q L FIG. I6.

y 17, 1956 F. B. HOLMES-HIGGIN 2,754,780

SEWING MACHINES Filed Nov. 28, 1952 19 Sheets-Sheet 12 s F l6. l2.

FIG/9 122m, msw 2 7 y 1956 F. B. HOLMES-HIGGIN 2,754,780

SEWING MACHINES Filed Nov. 28, 1952 19 Shaets-Sheet l3 OOOOOOOOQ41/vrwey y 1956 F. B. HOLMESH|GG|N 2,754,780

SEWING MACHINES l9 Sheets-Sheet 14 Filed Nov. 28, 1952 July 17, 1956 F.B. HOLMES-HIGGIN 2,754,780

SEWING MACHINES Filed Nov. 28, 1952 19 Sheets-Sheet 15 7 e0 fizz/20sBecky/1% 0/0;

,4'lforney July 17, 1956 F. B. HOLMES-HIGGIN 2,754,730

SEWING MACHINES Filed Nov. 28, 1952 19 Sheets-Sheet l6 July 17, 1 I F.B. HOLMES-HIGGIN 2,754,780

SEWING MACHINES 19 Sheets-Sheet 17 Filed Nov. 28, 1952 m m 0 F W. m m A0 .m& m

July 17, 1956 F. B. HOLMES-HIGGIN 2,754,780

.SEWING MACHINES l9 Sheets-Sheet 18 Filed Nov. 28, 1952 FIG. 3C

FIG. 31

y 1956 F. B. HOLMES-HIGGIN 2,754,780

SEWING MACHINES 19 Sheets-Sheet 19 Filed Nov. 28, 1952 FIG. 32

' I Figure 9f isa plan of ear box with United States Patent Office2,754,780 Patented July 17, 1956 tre t B i November 30; 1951* YGClhin'is: 011 1 2 2 This'invention relates tosewing machines.-

Hitherto the material" to be stitched has been passed under the needleby using the material itself to provide the amount of movement requiredih tlieirna kin'gof each stitch, and while various guideshave Beenprovidefd to simplify the'maintenance of the correct line of stitehing;

the skill of the operator has beerithe piedorhina'ht fa'ctbr VilrQOiltIOlllHg the shape-of the stitc'ii'liii'e'. t

The object of the present invention" is to provides construction ofsewing machinewhich can" be pre-set to produce any desired shape ofstitch li'n'e u-nder' auternatie control instead of under control ofthejoperator'; whose duties a're' confinedto feeding the machine withthe requifedma'terial.

According to the present inveh'tion a sewing machine comprises astitch-forming device, a holder for the-material tobe" stitched andmeans or moving the 'holdei relatively to the stitch-forming deviceunderthe controlf of guide means'acting onthe holder to causea giv'eh pointthereon to trace out a predetermined-pathrelative to the stitch-formingdevice; i

The material hoider may he mounted on a secondhry I units; and

carriage whichis movable aloiig ap'rirnary' carriage in a path at rightangles to the path of movement of said primary carriage; whileme'ans are'providedfor coiitrolliiig the're's'pective rates of movement of thecarriagessuch a way that agive'n point on these'condary carriage tracesout the desired predetermined path relative" to the stitch formingdevice;

In"0rder that the invention may be more clearly undetsthodj twoemhodiiherits thereof will novv be described by way of example withreference-'to"tlie'accorti pan-yhig diawings in which Figure l is afront perspective view;

igure 2 is a rear' perspective view;

Figure is fron'felevatioii;

Figure 4 is a rear elevation;

Figure 5" isa sectional plziri" on line V-"V iii Fig'nie' 4; Figti're'6" is an end view insection' on line VI- VI iii r igure 7f showsone ofthe chiitrblling aihs'gf t Figure 8 shows a eeae -oa -hnevi VH1 i'hFigured: c ever removed; Figure 1(1 is" a section o'iiyli'rie iii-Figure5; Figure 11' is asectioii on' lihe Figfiie 3';

Pigjuie' 14" shows the threat te iisioiiiiig device iii eleve- Fighre1:5 is a" plan Crate thread ten's'ioningdevice; Figure 16 is a viewlotilting' fromthe lef'tihFigure i=5; Figure" 17 shows theth'reatl-eu'ttiiig dei/ie iheIeVatibn; Figure 1? shows" thethread-cutting! device in plane Figur'19isa'wiiing diagram for themachine shewn ih Figures 1- to 18. V a a I Figure 20 shows in endelevation anarrangement of 2t two-part carns' adjustable to permit thestitching of pieces of material of the same general shape but varying inlength;

Figi1re21 isasection on the line XXI'=XXI in Figure 2 Figui' 22' i sasection on the line XX'H XXH in Figme 20;

Figure 2-3 shows'in' perspective how'm'aterial from'one or mdrerollscanbe fed-to the clamping device;

Fig'ijre sliowsin perspectivean'd'in the closed posi tion the" clampfiir' holding the material to he" stitched;

Figure shows the clamp inthe open position;

26' illiistrates mechanism for'o' pening'the' clamp and for pressing"the clamping elements together when closed, the parts being viewed fromthe rear and shown in" the positions which they occupy when the clamp iserased; I

Figure 27' isa view of'the'mechanism shown in Fi'glire 26*witlftlie"parts in the open position;

Figure 28 is a view corresponding to Figure 26 but Figure 2 9 iis aviewcorresponding to Figure 27 also jt xthe" om a Figui'30 is-a detailfront elevational View of' a switch unit;

Figure 31 is an end elevational view of one of the switch 32 and;33 are,respectively, views similar a) i i)" and 31 or another s'witeliunit ofthe inech= Ii'i"theembodimentsliown'in Figures 1 to 18; the ill flchine" (showngenerally in Figures 1 and 2) comprises an uprightcasirig'lhous'ing the two carriages; their guides; ii-ndtli clamp,indicated at C in Figures 1 and 2", a casing 2 housing thecontrol cams,andpro'vided at the rear with" a femovahle cover 3; two forwardlyextending" end frame members 4 and 5' etude-removable bench plate 6siibpbrred acrbss-the tops'of the members-s ands.

Attached to the'for'w'ar'd wall 7 o'f the casing 1- by lugs is'avertical' guide rail 8' for the first carriage 1-1, which is in theform" of an open frame and mbvesvrrrean The second carriage 12; whichmoves horizontally is inane form" of a plate and is guided by rollers"1'3eng a'ging' rails 14 attached to the upper and lower hoiiioritalmembers, of the carriage 1 1.

Eaeli ofthe upper and lower horizontalmembers of earns-"ge- II'c'a'rries a' forwardly projecting Block 15} (sh n in Figure 5' for thelower'horizonfa'l merhher) said Block's 15 enihraciiigthe guide rail 8between thethi Each block 15 has an inclined face on whi ch' is'nio'un'ted a greeted g'tiide roller 16', the" guide rollers engaging the corhersofthe ghiderail 8 assh'own in Figure 5. Mbunte'cl h'etween the blocks15- on a pin" (not shown) passing through the blocks and fixed thereinis a further guide folleir'l' tia'which runs on'the rear face of therail 8. (Figures-4 and 5 V The carriage 1 '1 is' urged upwardly by aweight'17 attached thereto By' chains 18 passing over pulleys 19 and isrrioved downwardly when required by the following mechanism.

Passing'through a boss 20" on the-rear wall 2d of casing 2 (Figure 8) isa shaft 21, of which the rearward end is reduced at 22 and isscrewthreaded.

A cam 23 for controlling the vertically movable carriage 1-1 ismountedonsaid shaft 2-1- by means of a boss 24 on the cam which is pushed on tothe shaft.

A second cam 25 for controlling the horizontally m'ov- 26 which ispushed on to the shaft 21'.

A-pin'2-7- carried by boss 26 passes through a hole 28 (Figure 7) in thecam 23 andenters anaxial bore 29' in

